Solve the system by the elimination method 7x+5y=-25 5x+3y=-23
1 answer:
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Answer:
(x) =
Step-by-step explanation:
let y = f(x) and rearrange making x the subject, that is
y = 5x + 4 ( subtract 4 from both sides )
y - 4 = 5x ( divide both sides by 5 )
= x
change x to (x) and y back to x, thus
(x) =
Answer:
Step-by-step explanation:
Given
Required
The cost of fencing (C)
The cost is calculated as:
Let:
So, we have:
<em>The question cannot be solved further since the dimension of the fence is not given</em>
<em>If you know the dimension, calculate the fence perimeter and substitute the value for x</em>